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Question

Consider the following data:

ΔfH0 (N2H4,l) = 50 kJ/mol

ΔfH0 (NH3,g) = 46k J/mol

B.E.(NH) = 393 kJ/mol and B.E.(HH) = 436 kJ/mol, also ΔvapH(N2H4,l) = 18 kJ/mol

The N- N bond energy in N2H4 is


A

226 kJ/mol

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B

154 kJ/mol

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C

190 kJ/mol

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D

45.45 kJ/mol

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